The Evolutionary Case Against Monogamy, Ctd

A reader writes:

I find this series of posts fascinating, partly because new science about the natural world is inherently interesting, but mostly because it raises profound questions about the relationship between the natural and the moral.  Too often the evolutionary psychology crowd leaps straight from one to the other (which even the title of the posts does), whereas I see morality, in many of its dimensions, as the attempt to constrain what is natural.  This is because I am a Christian...